Here’s your another post:
The trend is as the time goes by, the more major engine problems show up such as the cracked cylinder head. If you prefer a vehicle with 4 out of 5 rating in certain MYs for "Engine - Major" reported by Consumer Reports, that’s your choice. But you shouldn’t claim “the Gen 2 engines have outstanding reliability records” with such rating by CR. I’d choose a used car with 5 out of 5 for "Engine - Major" in past 5 ~ 8 years any day, and there’re plenty of them available.
And nothing major happened and no death reported, Mazda was forced by the NHTSA for a falling rocker arm safety recall.
I’d agree that the cracked cylinder head on the 2.5L NA with CD seems to be happened less than the 2.5T, but you’ve been ignoring the severity of such problem which is costly.
And you aren’t an engine designer either. We use the common sense, and a thicker aluminum wall has to be stronger than a thin wall. The Russian / Ukrainian guy compared several different heads and his Mazda head at the same area is really thin and cracked.
I believe it’s irresponsible not to warn people there’s a potential major engine problem exists however it’s rare. Let the people decide on this issue.
BTW, my 2016 CX-5 is pretty reliable since the dealer fixed 10 problems I spotted earlier under warranty. I still plan to keep it for as long as I can like my 1998 Honda CR-V. Comparing the problems that could happen on my 2016 CX-5 such as belt tensioner or oil control valve, that’s so minor and cheaper to fix than a cracked head.